we hired a contractor to resurface our pool decking, it looked bad from the start, discolored in several different variations, cracks, etc. they did pour the concrete during a temp. of 25degrees? That was a year ago, since then it has turned into a hideous site. it cracks when you walk on it. attachede are some photos, please give me any information.; from the research ive done, i have come to the conclusion it was a bad batch of "aggregate", but the contractor hasn't agreed to do a thing. what are my options? thank you.